scripted-diff: Remove redundant sync_all and sync_blocks

The sync calls are redundant after a call to generate, because generate
already syncs itself.

-BEGIN VERIFY SCRIPT-
perl -0777 -pi -e 's/(generate[^\n]*\)[^\n]*)(\n|\s)+self.sync_(all|blocks)\([^\)]*\)\n/\1\n/g' $(git grep -l generate ./test)
-END VERIFY SCRIPT-

test/functional/rpc_net.py

@@ -81,7 +81,6 @@ class NetTest(BitcoinTestFramework):
         # Create a few getpeerinfo last_block/last_transaction values.
         self.wallet.send_self_transfer(from_node=self.nodes[0]) # Make a transaction so we can see it in the getpeerinfo results
         self.generate(self.nodes[1], 1)
-        self.sync_all()
         time_now = int(time.time())
         peer_info = [x.getpeerinfo() for x in self.nodes]
         # Verify last_block and last_transaction keys/values.